Physics
The working of the quartz crystal in the watch is based on the

Photoelectric Effect
Edison Effect
Piezo - electric Effect
Johnson Effect

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Physics
In total internal reflection, the light travel from

Rarer to denser medium and it occurs with loss of intensity
Denser to rarer medium and it occurs with no loss of intensity
Rarer to denser medium and it occurs with no loss of intensity
Denser to rarer medium and it occurs with loss of intensity

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